diff --git a/changelog.md b/changelog.md
index 174dad4f..b2165758 100644
--- a/changelog.md
+++ b/changelog.md
@@ -2,6 +2,7 @@
 
 ## DEV-branch
 
+* 30.11.2023: Fix a nullptr access after trying to replay an invalid filename (#271), thanks to Olaf!
 * 29.11.2023: Updated audio library to play more MP3s, faster track change & delivery of the cover image
 * 25.11.2023: Save some cpu time in audio task by only updating the playtime statistics every 250ms
 * 22.11.2023: Web-UI: Search for files feature #268 
diff --git a/html/management.html b/html/management.html
index 2270f193..611a51f1 100644
--- a/html/management.html
+++ b/html/management.html
@@ -1896,7 +1896,11 @@ <h5 class="modal-title" data-i18n="tools.nvserase.title"></h5>
 		if (msg.duration > 0) {
 			document.getElementById('playtime').innerHTML = secondsToTime(msg.time) + " / " + secondsToTime(msg.duration);
 		} else {
-			document.getElementById('playtime').innerHTML = "-- / --";
+			if (msg.time > 0) {
+				document.getElementById('playtime').innerHTML = secondsToTime(msg.time);
+			} else {
+				document.getElementById('playtime').innerHTML = "-- / --";
+			}
 		}
 	}
 
diff --git a/src/SdCard.cpp b/src/SdCard.cpp
index e29746c0..e6b1e1f3 100644
--- a/src/SdCard.cpp
+++ b/src/SdCard.cpp
@@ -240,6 +240,7 @@ char **SdCard_ReturnPlaylist(const char *fileName, const uint32_t _playMode) {
 	if (files != NULL) { // If **ptr already exists, de-allocate its memory
 		Log_Printf(LOGLEVEL_DEBUG, releaseMemoryOfOldPlaylist, ESP.getFreeHeap());
 		freeMultiCharArray(files, strtoul(files[0], NULL, 10) + 1);
+		files = nullptr;
 		Log_Printf(LOGLEVEL_DEBUG, freeMemoryAfterFree, ESP.getFreeHeap());
 	}
 
@@ -402,6 +403,7 @@ char **SdCard_ReturnPlaylist(const char *fileName, const uint32_t _playMode) {
 		Log_Println(unableToAllocateMemForPlaylist, LOGLEVEL_ERROR);
 		System_IndicateError();
 		freeMultiCharArray(files, cnt + 1);
+		files = nullptr;
 		return nullptr;
 	}
 	snprintf(files[0], 5, "%u", cnt);
diff --git a/src/revision.h b/src/revision.h
index 75a5025d..bd169f12 100644
--- a/src/revision.h
+++ b/src/revision.h
@@ -1,4 +1,4 @@
 #pragma once
 
 #include "gitrevision.h"
-constexpr const char softwareRevision[] = "Software-revision: 20231129-1-DEV";
+constexpr const char softwareRevision[] = "Software-revision: 20231130-1-DEV";